Device for musician fighting angst during poor broadcast (5,4)
I believe the answer is:
organ stop
'device' is the definition.
(organ stop is a kind of device)
'musician fighting angst during poor broadcast' is the wordplay.
I cannot quite see how this works, but
an anagram of 'angst' is 'ganst' which is located in the answer.
an anagram of 'poor' is 'orop' which is within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'for' acts as a link.
Can you help me to learn more?
(Other definitions for organ stop that I've seen before include "(Knob controlling) set of pipes" , "Principal" , "Handle operating church pipes" .)